But police hope the serious crime prevention order (SCPO) will cripple his international crime empire for good.

Curtis Warren court order

Warren accepted the SCPO in a High Court hearing in October – but only now can its precise terms be made public. Under the five-year order, kingpin Warren can only have one phone, one SIM card, one landline and one computer – which he must make available to police.

He is barred from using payphones, telephone kiosks, any public Wi-Fi network and can only have one email address.

Warren, alleged to have amassed a £300m fortune through crime, will be stopped from carrying more than £1,000 in cash and must declare his bank accounts.

He must also tell the authorities of his foreign assets and property worth more than £1,000 and submit a yearly report on his finances, as well as his bank statements.

The criminal will be required to tell the National Crime Agency of “all sources of income gained through employment, work or state benefit”.

That means if Warren secures a legitimate job he will have to file all his payslips to police. The former bouncer must also declare any “import/export” business, any holidays he intends to take abroad and register any cars he drives.

The SCPO will even hang over Warren even if he chooses to move abroad. If he fails to abide by every term and condition in the 27-page document, he runs the risk of five years behind bars.

A CPS spokesman said: “There are very real grounds to believe that without this order being made, Curtis Warren would continue to be involved in serious crime. This order will severely curtail his ability to do so."

Warren’s barrister Anthony Barraclough told the ECHO that his client had considered the order “unnecessary” but agreed to consent to it.

Speaking after the order was approved in October, Mr Barraclough said: “My instructions are that Mr Warren wants to live a peaceful life when he comes out of prison. If this order helps to settle things, then he is quite happy to consent.”